What is free nitrogen? Nitrogen gas is called "free" nitrogen, meaning it is not combined with other kinds of atoms. Most organisms can use nitrogen only once it has been "fixed," or combined with other elements to form nitrogen-containing compounds.
Answer:
About 78% of the Earth's atmosphere is made up of "free" nitrogen (N2), produced by biological and chemical processes within the biosphere and not combined with other elements. ... One family of nitrogen compounds produced by nitrogen - fixing bacteria are called nitrates.
Explanation:
Hope this helps
Free nitrogen refers to nitrogen gas (N₂) that exists in the Earth's atmosphere as a diatomic molecule consisting of two nitrogen atoms bonded together. It is called "free" nitrogen because it is not chemically combined with other elements or atoms.
Nitrogen gas makes up approximately 78% of the Earth's atmosphere, making it the most abundant gas present. Despite its abundance, most organisms cannot directly utilize nitrogen gas in this form. This is because the bond between the two nitrogen atoms is very strong, requiring a significant amount of energy to break.
Therefore, free nitrogen refers to nitrogen gas (N₂) present in the atmosphere that is not chemically combined with other elements. It needs to undergo nitrogen fixation to be converted into usable forms before most organisms can utilize it.
For more details regarding free nitrogen, visit:
https://brainly.com/question/12625694
#SPJ6
Adult stem cells are best described as?
Explanation:
1 Definition. Adult stem cells are undifferentiated cells that reside among differentiated cells in a tissue or organ. They have the ability to renew themselves and differentiate into specialized cell types.
Adult stem cells, also known as tissue-specific stem cells or somatic stem cells, are multipotent cells that replace damaged and dying cells.
What are somatic stem cells?Somatic stem cells, also known as adult stem cells, are found in organs and tissues, have the ability to self-renew and give rise to the differentiated cell types that make up that organ or tissue (multipotency), and play an important role in the maintenance and repair of those organs and tissues. Adult stem cells are sometimes referred to as embryonic stem cells.
The bone marrow, the skin, the intestine, the brain, the blood vessels, the teeth, the reproductive system, and the heart are only some of the organs and systems in the body that include somatic stem cells.
Learn more about stem cells, here:
https://brainly.com/question/10165659
#SPJ6
An daaption that allows humans to maintain a stable internal environment despite changing external conditions
NEED HELP ASAP⠀⠀⠀⠀⠀⠀⠀⠀⠀
Answer:
Explanation:
Collagen is one of the main reasons why scars heal when the tissues are damaged.
I never took this class but that is some left over knowledge I have. I hope this helped you
Anaerobic respiration released less energy than aerobic respiration
True
False
Answer:
True
Explanation:
Anaerobic respiration is done when your doing a physical activity.
How does the structure of DNA allow DNA to be copied without mistakes? Your answer
should include: hydrogen bonds, complementary strands, and semi-conservative replication
I will give brainliest to whoever answers best !! Pls
Answer:
DNA replication occurs through the help of several enzymes. These enzymes "unzip" DNA molecules by breaking the hydrogen bonds that hold the two strands together.
Each strand then serves as a template for a new complementary strand to be created. Complementary bases attach to one another (A-T and C-G).The primary enzyme involved in this is DNA polymerase which joins nucleotides to synthesize the new complementary strand. DNA polymerase also proofreads each new DNA strand to make sure that there are no errors.
Explanation:
I think that's how I got it. Am sorry its long.
Please help
Predict how the inability of a species to adapt within a changing environment may contribute to the extinction of that species.
Answer:
B
Explanation:
What functions do the fins have for the squid?
Answer:
Help Them Turn or Go faster
Explanation:
Normally the fins on a fish or whale are to help them turn but since squids are slow they might be for making them faster. I still think that they are for turning.
Answer:
Fins: At the tail (posterior) end of the squid students will notice the two fins on the mantle. The fins allow the squid to steer themselves, help stabilize their position and propel the squid at slow speeds.
Explanation:
3. How does a vaccine work? *
2 points
o
It trains your immune system to attack the disease causing agent before it makes you
sick
O It makes you a little sick so the disease worit make you feel sick next time.
Oh locks your cells' so diseases carít get in.
O i fills up your immune system with vitamins and minerals that fight disease.
1 Invasive plant species affect the interactions of living and nonliving components
of an ecosystem, so the removal of invasive plants is often necessary. The goal of
most plant-control methods is to disrupt or inhibit the function of different plant
systems. For example, insects can be used to chew through roots in order to
reduce a plant's ability to absorb water.
Which of these functions would be most immediately affected by a reduction in water
uptake by roots?
A Disease resistance
B Seed dispersal
C Sunlight absorption
D Photosynthesis
Answer: photosynthesis
Explanation:
Answer:
D. Photosynthesis
Explanation:
I got it "Correct"
17 Refer to the illustration above. Structure 4 is
a. the cell membrane.
c. mitochondrion.
b. a Golgi apparatus,
d. the nucleus.
Quickly please
Answer:
the answer to the illustration above is see mitochondrian
Answer:
b.) the nucleus
Explanation:
Wolves living and hunting in packs is an example of:
A. Behavioral Adaption
B. Structural Adaption
C. Physiology Adaption
D. Hunting packs is not an adaption
Answer:
A.) Behavioral Adaption would be the answer!
(GIVING BRAINLIEST!!)
What is formed during the condensation part of the water cycle?
A) Water vapor and steam
B) Water droplets and clouds
C) Rain and clouds
D) Sleet and rain
Explain why.
Answer:
Its B
Explanation:
This process is called condensation. These water droplets cling together and form clouds. When the droplets become heavy enough, they fall to the ground as precipitation.
Answer:it's B Water droplets and clouds
Explanation: I had this on my test hope it helps!
In the phrase "survival of the fittest," the term "fittest" refers to:
A. The best-adapted organisms
B. The biggest organisms
C. The smartest organisms
D. The fastest organisms
Answer:
A
Explanation:
From what I know this could be wrong, but in the four stages of natural selection, the first step is overproduction, the second step is adaptation, and the third step is competition or survival of the fittest. This means that only the organisms with the best adaptations for their surroundings will survive. COULD BE WRONG SORRY IF IT IS
gas pressure in a closed system is caused by
Answer:
"C"
Explanation:
Gas pressure in a closed system is caused by resultant force of all combines collisions. The correct option among all the options that are given in the question is the third option or option "C". The other options can easily be ignored. I hope the answer comes to your help.
Answer:
resultant force of all combines collisions
Explanation:
are seals and monkeys related?
Answer:
No lol
Explanation:
Which leaf would be in a cold and snowy climate?
Venus Fly Trap
Cactus
Sunflower
Wintergreen boxwood
Answer Wintergreen Boxwood
Explanation:
These are from cold snowy climates
im not sure but I have Wintergreen boxwood in my backyard and its snows all the time and its still very much alive so ye
sorry if i got this one wrong (i do know cactus, and sunflower usually need lots of heat to survive so if that helps)
True or False. Pepsin digests cellulose.
Answer:
true
Explanation:
Which of the following word means “able to be touched and seen”?
A. Physical
B. Feeling
C. Object
D. Visible
Answer:
A
Explanation:
In the genetic structure, which component changes when coding for different triplets and amino acids?
A.) sugar
B.) phosphate group
C.) nitrogen base
D.) all three above will change in creating different triplets
Using your understanding of how infectious diseases can be transmitted, explain why schools can have a large number of students absent due to illness at the same time.
Explanation:
its because due to the illness caused by one person it may have affected the others.
which can lead to an increase .
students can be affected by sharing water bottles, hugging,sharing things.
Can lead to the transmission of diseases.cell structure and major cell types
Answer:
Explan
The cell structure comprises individual components with specific functions essential to carry out life's processes. These components include- cell wall, cell membrane, cytoplasm, nucleus, and cell organelles.
A student drew a representation of the atoms of a solid. The illustration shows closely packed atoms vibrating, but remaining in the same relative positions.
Which of the following changes must the student make to the illustration to accurately represent the same substance in the liquid phase?
A
The illustration should show increase movement of the atoms.
B
Each individual atom should be much larger.
C
There should be very wide spaces between the atoms.
D
The shape of each atom must reflect the shape of the container.
Answer:
A The illustration should show increase movement of the atoms
Explanation:
which describe a liquid
(A) changes shape and volume
(B) changing shape and fixed volume
(C) fixed shape and volume
(D) fixed shape and changing volume
Answer:
b: changing shape and fixed volume
Explanation:
1 point
The age of the Atlantic Ocean floor is
as it moves away from the ridge.
Answer:
it is 180 million years old
A black hybrid rabbit is crossed with a white purebred rabbit.
What is the probability of an offspring being black?
A. 25%
B. 50%
C. 75%
Answer
A. 25%
Explanation:
This is because the black hybrid would be 50% one breed and 50% another breed. Then the white purebred is 100% one specific breed. So by mating, all of those breeds that the parents have all reduce by 1/2 for the offspring.
Long ago, the tree of life was seen as having five branches.
True or False?
Answer:
false, hopefully iss right
Which process has the greatest potential for genetic variability?
O
A. cell differentiation
B. interkinesis
o
C. meiosis
D. mitosis
Answer:
C. Meiosis
Explanation:had the same question and finally got the answer
One plant has the genotype BB. The second plant has the genotype Bb. The two plants would
Answer:
C bc tht are show tht same
what state of matter is the neutral chlorine-36 isotope
Answer: Chlorine-36 (^36Cl) is an isotope of chlorine.
Explanation: Chlorine has two stable isotopes and one naturally occurring radioactive isotope, the cosmogenic isotope ^36Cl.